Buffing or polishing wheel.



J. 0.- GODMAN & P. W. WOROH.

BUPFING 0R POLISHING WHEEL.

APPLICATION FILED SEPT.11, 1908.

981,841 Patented Jan. 17,1911.

I 2 SHEETSSHEET 1.

J. O. GODMAN & F. W. WORGH. BUFFING 0R POLISHING WHEEL.

APPLICATION FILED SEPT. 11, 1908.

Patented J an. 17, 1911.

2 SHEETSSHEET 2.

' r ga kcesses:

@MA/M I snares manna onnien.

JOHN C. CODMAN, OF DETROIT, MICHIGAN, AND FREDERICK W. WORCH, OFMATTAPAN, MASSACHUSETTS, ASSIGNORS TO FRANKLIN L. CODMAN AND JOHN C.CODMAN, OF SOUTH BOSTON, MASSACHUSETTS, A FIRM.

BUFFING OR POLISHING WHEEL.

Specification of Letters Patent. Patented Jan. 1'7, 1911.

Application filed September 11, 1908. Serial No. 452,682..

ing drawing, is a specification, like letters on the drawingrepresenting like parts.

This invention has for its object the production of a novel andefficient buffing or polishing wheel made of suitable flexible material,such as cotton drilling, canvas or the like, so constructed and arrangedthat waste in the manufacture of the wheel is reduced to a practicallynegligible quantity, the greatest possible wear from the material isattained and increased efliciency obtained in its operation.

In the construction of our improved buifing or polishing wheel we buildup an open wheel or annulus by means of a circularly arranged series ofmembers or'elements each made from a quadrilateral blank-of the de-'sired material folded to present primary and final folds at right anglesto each other, with oppositely turned secondary or intermediate folds.The folded members are then interleaved and overlapped, that is, thefinal fold of one member is interposed between and overlapped by theopen edges formed by the secondary folds of the next adjacent memher,the initial folds ofthe several members being arranged substantiallytangential to the inner circumference of the annular wheel. The initialfolds diverge from each other as they approach the outer circumferenceof the wheel, at which a series of pockets are presented, which serve tohold and retain the polishing material in small quantities butdistributed over the entire periphery of the wheel.

Owing to the manner in whichthe folded members are assembled the wheelis thicker toward the center, and more compact, the lower and thinnerportion spreading and opening up the folds at the periphery, therebypreventing the accumulation of particles from the object being buffed orpolished, ob-

viating dressing to put the wheel'int-o proper working condition.

We prefer to interpose the built up annulus between outer pieces offabric, and firmly securing, them and the folded members together, andby clamping on a suitable hub as many of the built-up sections or annulias may be required for the work a wheel having a face of any desiredwidth can be obtained.

,The various novel features of our invention will be fully describedhereinafter and particularly pointed out in the following claims.

Figure 1 is a side elevation of a buffing or polishing wheel embodyingone form of our invention, one of the outer pieces being broken out toshow the arrangement-of the foldedmembers by which the annular wheel isbuilt up, andone of said members is also partly broken out; Fig. 2is asectional view of a wheel made up of a plurality of sections or annulisuch as shown in Fig. 1, clampedtogether uponan expansible hub; Fig. 3is an enlarged perspective view showing the interleaving and overlappingof several of indicated by dotted lines; Fig. 8 is a view similar toFig. 3, but showing the folded members of triangular outline instead ofrectangular, the final shape I pending upon whether the initial fold ismade as shown in Fig. 5 or in Fig. 7; Fig. 9

illustrates the appearance of a'blank cut on the bias after the'initialfold has been made therein.

In making our novel wheel we cut quadrilateral blanks from the cloth,drilling, or other desired material, and said blanks may be square, asshown at 1, Fig. 4, or' the blanks may be cuton the bias, as in Fig. 9.Taking the blankl it is given an initial of such members de-' fold atthe dotted line 2, Fig. 4, parallel to its opposite edges, the foldbeing indicated at3, Fig. 5, and then the doubled blank is oppositelyfolded over along the lines 4, 5 forming the intermediate or secondaryfolds 5, Fig. 6. We now take the four-ply member and give it a finalfold along the line 6, Fig. 6, such final fold being at right angles tothe initial fold 3, as will be obvious, the completed member havingeight superimposed thicknesses -or plies of the material, with unfoldedor raw edges all at the outer. end, that is, opposite the fold 3. Theserectangular members are longer than 15 wide, and we now proceed tobuild'them up ing an open center, as shown in Fig. 1, the annulus beinginterposed between two circular pieces 7 of the material, as shown inFigs. 1 and 2. y

In building up the wheel the series of folded members are so laid thatthe free edges or secondary folds 5 ofeach are substantially tangent toa circle concentric with the center of the wheel, and in practice thiscircle is the inner circumference of the an.- nulus or wheel, as shownin'Fig. l, the initial and doubled over folds 3 making up suchcircumference and being substantially tangential thereto, as shown. Thefinal fold 6 of each folded member is interposed between and overlappedby the free edges of the next adjacent member, ,as shown clearly in Fig.3, the folds '6 diverging toward the outer circumference or periphery.of the wheel, and owing to this arrangement the wheel is thicker andmore compact toward the center. This is'advantageous, because when thewheel is in operation it spreads at the periphery and opens up the folds6 and 5, which prevents. accumulation of the particles from the articlebeing buffed or.polished, and .obviatingdressing of the wheel to get itinto proper operative condition. The positioning of the folded members 4causes the fiber thereof to run diagonally across the radius of thewheel, thereby increasing the wear of the fabric to the maximum." A-series of opposite pockets are formed by the final. and secondary folds'of each member, at the periphery of the wheel, which hold theupolishingmaterial in small quantities and we obtain the best and most efiicientresults with a small each otherand pass through the open cen-"' ter 12of each wheel or annulus, the'disks initial fold 16, as before, and atriangular in the form of an annulus or wheel hav-.

quantity ofbuffing or polishing material. The built-up annulus and thecircular ing, as 9. Any desired number ofthe sec-' 10 holding the builtup wheels in proper position. Suitable collars 13 hold the parts of thehub in fixed and clamping position on the shaft 14, Fig. 2, wherein oneof the wheel sections or annuli is shown in operative position adjacentone of the clamping disks 10.

Instead of making the folded members as described, we may take the blankFig. 7, and make the initial fold 16 from one to the opposite corner,and then the secondary folds 17, Fig. 8, are made on the lines 17", Fig.7. The final fold 18 is made on the line 18, Fig. 7, at right angles tothe folded member is made, as shown in Fig. 8. V The triangular membersare .assembled as' shown therein, in a manner similarto the building up.previously described, and the longer final folds 18 are arrangedsubstantially tangent to the inner circumference of the wheel orannulus. This second mode of folding brings the raw edges at theperiphery of the wheel, as before, and the opposite sets of pockets areagain presented by the folds 17 and 18, with similar results. In eithercase the quadrilateral shape of the blanks enables us to practicallyeliminate waste in cutting the material, and the triple, folding of theblank gives to each folded member a thickness of eight plies, as will bemanifest. Even: when the fabric is out on the bias the only waste is thesmall triangular piece cut off each end of the..,bolt of fabric, the twopieces containing so little fabric that in practice the waste isnegligible. Thus the fabric is thoroughly utilized, with .the waste sominimized as to be negligible, and the raw edges of each folded memberare presented at the periph- 105 cry of the wheel, the wear beingdiagonal 'to the direction of the threads or filaments of which thefabric is composed. This prevents the threads or filaments from beinefficiency of the wheel.

The fabric may be cut straight or on the bias, as may be desired, and ifout on the bias the final shape of the folded member will bequadrilateral, the initially folded blank being shown in Fig. 9, withthe initial fold at 19, the secondary folds being made along the lines20, and the final fold at 21 is made at right angles to the initialfold, as before. i

Having described our invention, what we claim as new and desire tosecure by Letters Patent is I 1. A butting or polishing wheel having aplurality of folded ieees each having a primary fold and a al fold atright angles to each other, and oppositely turned secondary folds, theprimary folds being located toward the center of the wheel andsubstantially tangential to a circle concenpulled out and greatlyincreases the life and 110 tric thereto and the final fold of each piecebeing introduced between and overlapped by the secondary folds of thenext piece.

2. A rality of radially placed pieces, each piece adjacent toeach twiceto bring its en with the ends of other, and finally folded the secondandthird folds adjacent to each other, said pieces being nestedtogether.

brush section consisting of a plu- In testimony whereof, we have signedour names to this specification in the presence,

of subscribing witnesses.

" JOHN C. CODMAN.

FREDERICK W. WORGH. \Vitnesses for Codman:

JOHN M. SUTTON,

HOWARD A. RIGGINS. Witnesses for Worch: FRANKLIN L. CODMAN, E. F,FLAVIN.

